Hager EUU100 Phase Monitoring Relay, 3-Phase, 1 Changeover Contact, 3x230/400V AC

Phase monitoring relay for 3-phase networks, providing reliable protection against phase sequence, phase failure, undervoltage, overvoltage, and asymmetry. With adjustable thresholds and delays, it ensures continuous monitoring of critical electrical parameters.

Advantages

Adjustable undervoltage (-5% to -20%), overvoltage (+5% to +20%), and asymmetry (5% to 15%) thresholds allow precise adaptation to application requirements. Response and switch-on delays are independently adjustable from 0.1 to 10 seconds, preventing nuisance tripping from transient fluctuations. The 1 changeover contact (SPDT) rated at 8A provides flexible control options.

Suitable for

• Protection of motors and pumps against phase loss and incorrect phase sequence
• Monitoring of supply quality in industrial and commercial installations
• Control of equipment sensitive to voltage deviations or phase asymmetry

Key specifications

• Nominal operating voltage: 3x230/400V AC, adjustable 3x200-500V AC
• Frequency: 50/60 Hz
• Contact configuration: 1 changeover (SPDT), rated current 8A (AC-1, 250V AC)
• Mounting: DIN rail, width 3 modules (approx. 52.5 mm)
• Terminals: screw type, IP20; front IP40
• Operating temperature: -20°C to +55°C

Recommendations

Ideal for applications requiring reliable phase monitoring with adjustable parameters and compact DIN rail mounting.